DSP LASER AP with MCS
8.1.2. DSP LASER AP
The safety device DSP LASER AP is a visible laser emission barrier which, realized and
placed as described in Standard EN12622, protects the operator of the press brake against
the danger to be squashed between the upper tool and the lower tool during the closing of
the press in high speed. The device is constituted by a transmitter TX, which generates the
laser emission, and by a receiver RX, which receives it and transmits the processing of the
received signals to MCS module.
Main task of DSP LASER AP is detecting, within the limits defined by its detection
capability, the intrusion of any opaque physical element into the “
detection area
Figure 7 represents the position of DSP LASER AP on the machine and the section of the
detection area with the sensors present in the receiver lighted by the laser beam.
Figure 7
Not during all the phases of the machine cycle or in the different operating modalities, all the
receivers are necessarily enabled to detect an object entering the detection area. To be
detected, the object has to interrupt the laser beams hitting at least, one of the enabled
sensors. Detecting the object causes the intervention of the device, which must stop the
movement of the machine or activate an action foreseen by the operating cycle, as the
inhibition of a set of sensors in case of blanking. Figure 8 represents the section of the
protection area and its logic of positioning with respect to the upper tool.
The horizontal protection layer is located from the tip of the tool at a safety distance equal to
the maximum stop distance allowed for the safe use of the press brake with the DSP
LASER AP device + 5mm. The maximum allowed values are, as described later, three:
14mm, 18mm and 24mm.
The safety area preempts the movement of the upper tool for such a distance which allows
stopping the tool without this can squash any opaque object possibly between itself and the
lower tool.
The object possibly under the protection area, once penetrated it, should generate the
command to stop the machine, which will stop within a distance called “machine stop
distance”.
As the stop command has been generated at a distance equal to “maximum allowed stop
di 5mm, the tool has ended its movement at a distance = maximum allowed SA –
machine SA + 5mm, clearly without even brushing on the object.
DLAM01EN
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Summary of Contents for DSP LASER AP
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